Tuning giant anomalous Hall resistance ratio in perpendicular Hall balance

J. Y. Zhang, G. Yang, S. G. Wang, J. L. Liu, R. M. Wang, E. Amsellem, A. Kohn, G. H. Yu

Research output: Contribution to journalArticlepeer-review

Abstract

Anomalous Hall effect at room temperature in perpendicular Hall balance with a core structure of [Pt/Co]4/NiO/[Co/Pt]4 has been tuned by functional CoO layers, where [Pt/Co]4 multilayers exhibit perpendicular magnetic anisotropy. A giant Hall resistance ratio up to 69900% and saturation Hall resistance (RSP) up to 2590 mΩ were obtained in CoO/[Pt/Co]4/NiO/[Co/Pt]4/CoO system, which is 302% and 146% larger than that in the structure without CoO layers, respectively. Transmission electron microscopy shows highly textured [Co/Pt]4 multilayers and oxide layers with local epitaxial relations, indicating that the crystallographic structure has significant influence on spin dependent transport properties.

Original languageAmerican English
Article number152401
JournalApplied Physics Letters
Volume106
Issue number15
DOIs
StatePublished - 13 Apr 2015

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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